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1111©2002,CiscoSystems,Inc.Allrightsreserved.AutoQoSTechnicalPresentation,1/03111©2002,CiscoSystems,Inc.Allrightsreserved.AutoQoSTechnicalPresentation,1/03聚划算©2002,CiscoSystems,Inc.Allrightsreserved.AutoQoSTechnicalPresentation,1/03CiscoAutoQoSTechnicalPresentationRamyaVenkatramanTechnicalMarketingEngineer–QoSInternetTechnologiesGroup3333©2002,CiscoSystems,Inc.Allrightsreserved.AutoQoSTechnicalPresentation,1/03Agenda•Introduction•CiscoAutoQoSFramework•AutomationwithCiscoAutoQoS•AutoQoSDeploymentCaseStudy•SummaryIntroduction4444©2002,CiscoSystems,Inc.Allrightsreserved.AutoQoSTechnicalPresentation,1/03Introduction–IETFDiffServArchitecture(RFC-2475)•Theidea:differentservicelevelsforpackets•Theservice:somesignificantcharacteristicsofpackettransmissioninonedirectionacrossthenetworkExamples:bandwidthandlatency5555©2002,CiscoSystems,Inc.Allrightsreserved.AutoQoSTechnicalPresentation,1/03ANewParadigmforAutomatingtheDeliveryofNetworkQualityofService•KeyTakeaways:SimplerQoSdeployments–ReducesoperatorerrorsCheaperQoSdeployments–Upto2/3rdsreductionincostFasterQoSdeployments–Upto2/3rdsreductionindeploymenttime•CiscoAutoQoSinitialfocus:QoSforVoiceoverIPIPTelephonyishere!IPTelephonyrequiresQoSQoSdeploymentcanbechallengingCiscoAutoQoSmakesVoIPdeploymentssimpler,cheaper,andfaster•CiscoAutoQoSretains100%customercontroloverconfiguration6666©2002,CiscoSystems,Inc.Allrightsreserved.AutoQoSTechnicalPresentation,1/03ROUTERSWITCHClassification(CoS,DSCP,ACLs,VLAN,Port-based)CiscoQoSIntroduction:ACompleteDiffservToolkitLinkEfficiencyMechanisms(Compression,Fragmentation)CongestionAvoidanceMechanisms(WRED,WRED-ECN)CongestionManagementTechniques(WFQ,CBWFQ,LLQ)Classification&Marking(DSCP,IPPrecedence,nBAR,etc.)FETrafficConditioners(Policing,Shaping)Queuing&Scheduling(WRR,PQ)BufferManagement&WREDClassification(CoS,DSCP,ACLs,VLAN,Port-based)Policing&Marking(Aggregate&MicroFlowPolicing)GEATMPPPHDLCFRAMERELAYPROVISIONING&MONITORINGCBQoSMIB,QPM3.07777©2002,CiscoSystems,Inc.Allrightsreserved.AutoQoSTechnicalPresentation,1/03Agenda•Introduction•CiscoAutoQoSFramework•AutomationwithCiscoAutoQoS•AutoQoSDeploymentCaseStudy•SummaryCiscoAutoQoSFramework8888©2002,CiscoSystems,Inc.Allrightsreserved.AutoQoSTechnicalPresentation,1/03DiffServFunctionCiscoIOSQoSFeatureBehaviorClassificationNBARDSCP,PortClassificationofVoIPbasedonpacketattributesorporttrustMarkingClass-BasedMarkingSetL3/L2attributestobucketizepacketsintoaclassCongestionManagement%basedLLQ,WRRProvideEFtreatmenttovoice&BEtreatmenttodataShapingClass-basedShapingorFRTSShapetoCIRtopreventburst&smoothTraffictoConfiguredRateLinkEfficiencyMechanismHeaderCompressionReducetheVoIPbandwidthrequirementLinkEfficiencyMechanismLinkFragmentation&InterleavingReducejitterexperiencedbyvoicepackets•AutomationandsimplificationoftheexistinguserinterfacetoexpeditedeploymentofQoSfeaturesforVoIP•Fine-tuningofAutoQoSgeneratedparametersbyuser,ifdesiredCiscoAutoQoS-VoIPFrameworkDiffServFunctionsAutomated9999©2002,CiscoSystems,Inc.Allrightsreserved.AutoQoSTechnicalPresentation,1/03CiscoAutoQoSFramework–NetworkBasedApplicationRecognition•BenefitsIdentifiesLayer4toLayer7applicationsandprotocols•Stateful&deeppacketinspectionProtocolDiscoveryanalyzesapplicationtrafficpatternsinrealtimeandidentifiestrafficisrunningonthenetwork•PlatformSupportCisco1700,2600,3600,7100,7200,FlexWanSeriesRoutersSwitches:MSFCsupportonSup1a&Sup2introducedinRelease12.1(13)ECitrix25%Netshow15%Fasttrack10%FTP30%HTTP20%LinkUtilizationWhatApplicationsarerunningthroughmynetwork?10101010©2002,CiscoSystems,Inc.Allrightsreserved.AutoQoSTechnicalPresentation,1/03CiscoAutoQoSFramework–nBARRTPPayloadTypeClassificationCODECPayloadTypeG.711(Audio)0(mu-law)8(a-law)G.721(Audio)2G.722(Audio)9G.723(Audio)4G.728(Audio)15G.729(Audio)18H.261(Video)31MPEG-1(A/V)MPEG-2(A/V)14(Audio),32(Video),33(A-V)Dynamic96-127•EasesclassificationofvoiceandvideotrafficVoIP,streaming/realtimevideo,audio/videoconferencing,FaxOverIP•DistinguishesbetweenRTPpacketsbasedonpayloadtypeandCODECS•RemovesdependenciesonUDPPortRange&DSCPmarkings11111111©2002,CiscoSystems,Inc.Allrightsreserved.AutoQoSTechnicalPresentation,1/03CiscoAutoQoSFramework–PercentageBasedPolicies•ProblemsFixedCIRimposesscalabilityissuesServicepoliciesdifferbyinterface,withawiderangeofinterfacebandwidths•SolutionConfigurepoliciesasapercentageofavailablebandwidth•AdvantageIncreasedScalability&ManageabilitySamePolicyMapcanbeappliedonmultipleinterfacesandoninterfaceswithvaryingbandwidthBuildOnce,ApplyManyPolicies12121212©2002,CiscoSystems,Inc.Allrightsreserved.AutoQoSTechnicalPresentation,1/0310mbpsEthernet10mbpsEthernetVoice1500DataBytesVoiceVoice1500DataBytesVoiceVoice1500DataBytesVoice56kbWAN~214msSerializationDelayVoicePacket60bytesEvery20msVoicePacket60bytesEvery214msVoicePacket60bytesEvery214msBenefit:reducethejitterinvoicecalls•ImplementedviaMultilinkPPP(MLP)overFR,ATM,andleasedlines•Fragmentsareinterleavedwiththereal-timepackets,reducingtheSerializationdelayexperiencedbyVoicepacketsCiscoAutoQ